If your baby has a fever from the vaccination, you should first monitor the body temperature. If the fever is not very serious and the child is not obviously uncomfortable, it is fine to pay attention to monitoring the body temperature at this time and give the child more water to drink. It is often necessary to ensure that the child’s body temperature is below 38.5°C. Once the body temperature exceeds 38.5°C, it is necessary to use some fever-reducing drugs for treatment. At this time, you can take oral ibuprofen suspension or acetaminophen suspension for fever reduction treatment, which is more effective. Most of the prophylactic injections are inactivated viruses or bacteria. At this time, it is necessary to clarify the type of prophylactic injection, whether it is a viral or bacterial prophylactic injection. If there is an obvious bacterial infection, this time you generally need to use antibiotics for treatment, you can take some oral cefixime granules for children.